A Quadraxial Feed for Ultra-Wide Bandwidth Quadruple-Ridged Flared Horn Antennas
Paper in proceeding, 2014
A quadraxial feed, excited by two orthogonal differential modes, is proposed for ultra wideband quadruple-ridged flared horn (QRFH) antennas that obviates the need for a balun. It is shown that in this configuration the fundamental TE11 mode is most strongly excited over the entire frequency band, while the higher-order modes are significantly suppressed, as compared to the conventional excitation using the ridge-to-coax balun transition. These properties lead to several advantages for QRFH antenna applications which require frequency-invariant beam characteristics, high port isolation and low cross-polarisation level, such as e.g. reflector antenna feeds for future radio telescopes.
Reflector antenna feeds
Ultra wideband antennas
Quadruple-ridged waveguides
Radio astronomy
Author
Theunis S. Beukman
Marianna Ivashina
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Rob Maaskant
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Petrie Meyer
Carlo Bencivenni
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
8th European Conference on Antennas and Propagation, EuCAP 2014, The Hague, The Netherlands 6-11 April 2014
2164-3342 (ISSN)
3312 - 3316978-889070184-9 (ISBN)
Areas of Advance
Information and Communication Technology
Infrastructure
Onsala Space Observatory
Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/EuCAP.2014.6902537
ISBN
978-889070184-9